Trouble with MiwoSQL plugin

I’m having trouble with the MiwoSQL plugin. It worked well for several months, then recently my site was hacked. After the fix, MiwoSQL no longer works. When I try to activate it, I get the message that the plugin could not be activated because it triggered a fatal error:

Warning: rename(/home/content/p3pnexwpnas02_data02/67/2087867/html/wp-content/plugins/miwosql/miwi,/home/content/p3pnexwpnas02_data02/67/2087867/html/wp-content/miwi): No such file or directory in /home/content/p3pnexwpnas02_data02/67/2087867/html/wp-content/plugins/miwosql/wordpress.php on line 139

Fatal error: Call to undefined function mimport() in /home/content/p3pnexwpnas02_data02/67/2087867/html/wp-content/plugins/miwosql/wordpress.php on line 159.

So I thought I would just delete the plug in and then reinstall, but when I try to delete it, I get this message:

Fatal error: Class ‘MFile’ not found in /home/content/p3pnexwpnas02_data02/67/2087867/html/wp-content/plugins/miwosql/uninstall.php on line 84

Does anyone have any thoughts on what I should do?

Thanks for your help!